JPH029439A - Heater for a catalyst tube for rerorming a fuel - Google Patents

Heater for a catalyst tube for rerorming a fuel

Info

Publication number
JPH029439A
JPH029439A JP1070276A JP7027689A JPH029439A JP H029439 A JPH029439 A JP H029439A JP 1070276 A JP1070276 A JP 1070276A JP 7027689 A JP7027689 A JP 7027689A JP H029439 A JPH029439 A JP H029439A
Authority
JP
Japan
Prior art keywords
tube
sleeve
fuel
heated
fuel reforming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1070276A
Other languages
Japanese (ja)
Other versions
JP2712084B2 (en
Inventor
Jr Edmund K Parenti
エドムンド　ケイ．パレンテイ，ジュニア
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UTC Power Corp
Original Assignee
International Fuel Cells Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Fuel Cells Corp filed Critical International Fuel Cells Corp
Publication of JPH029439A publication Critical patent/JPH029439A/en
Application granted granted Critical
Publication of JP2712084B2 publication Critical patent/JP2712084B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • H01M8/0625—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material in a modular combined reactor/fuel cell structure
    • H01M8/0631—Reactor construction specially adapted for combination reactor/fuel cell
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/06—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
    • B01J8/067—Heating or cooling the reactor
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
    • C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
    • C01B3/384—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts the catalyst being continuously externally heated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/026—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled and formed by bent members, e.g. plates, the coils having a cylindrical configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00026—Controlling or regulating the heat exchange system
    • B01J2208/00035—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2208/00088—Flow rate measurement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00106—Controlling the temperature by indirect heat exchange
    • B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
    • B01J2208/00212—Plates; Jackets; Cylinders
    • B01J2208/00221—Plates; Jackets; Cylinders comprising baffles for guiding the flow of the heat exchange medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00504—Controlling the temperature by means of a burner
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/02—Processes for making hydrogen or synthesis gas
    • C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
    • C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
    • C01B2203/0233—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being a steam reforming step
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/06—Integration with other chemical processes
    • C01B2203/066—Integration with other chemical processes with fuel cells
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/08—Methods of heating or cooling
    • C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
    • C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/12—Feeding the process for making hydrogen or synthesis gas
    • C01B2203/1205—Composition of the feed
    • C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
    • C01B2203/1235—Hydrocarbons
    • C01B2203/1241—Natural gas or methane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Fuel Cell (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

PURPOSE: To facilitate the assembly of a heater by spirally winding a plurality of ribs on the outer peripheries of fuel reforming catalyst tubes so as to make linear contact therewith and further, bending and assembling metallic sheet sleeves on their circumferences in a manner as to avoid the occurrence of slackening. CONSTITUTION: The plurality of columnar steel rods (ribs) 4 are spirally wound and mounted on the outer peripheral surface of the fuel reforming catalyst tube 2 of a fuel battery exothermic device or the like so as to make linear contact therewith and further the metallic sheet is bent and deposited on the spiral rods 4 so as to enclose the same. Both ends are superposed in an overlapping part 10 and are tightened by fastening straps 12, by which the inner flank of the sleeve 8 is tightly joined to the outside surface of the rods 4. The overlapping part 10 of the sleeve 8 is welded and joined in this state and the fastening straps 12 are removed. The spiral passages of heating gas are formed by the rods 4 between the sleeve 8 and the tube 2. The assembly is facilitated and the flow rate of the heating gas is made uniform, by which the heating efficiency is enhanced.

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は、燃料電池動力設備における触媒式燃料処理
装置に関し、特に触媒を有効に作用させるための燃料改
質用触媒チューブの加熱装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a catalytic fuel processing device in fuel cell power equipment, and particularly to a heating device for a catalyst tube for fuel reforming to make the catalyst work effectively. It is.

［従来の技術］ 生の炭化水素燃料には、燃料電池発電装置の動力発生部
に導入する前に触媒式の燃料改質装置によって水素濃度
の高い燃料ガスとする燃料改質処理を施こす必要がある
。燃料改質処理の代表的なものとしては、燃料燃料改質
装置のハウジング内に配設されたチューブ状容器内に配
設された触媒床によって、燃料改質を行うしのが知られ
ている。[Prior art] Raw hydrocarbon fuel needs to be reformed to a fuel gas with a high hydrogen concentration using a catalytic fuel reformer before being introduced into the power generation section of a fuel cell power generation device. There is. A typical fuel reforming process is known to reform fuel using a catalyst bed placed in a tubular container placed inside the housing of a fuel reformer. .

主燃料は、蒸気と混合され、燃料改質装置のハウジング
内に導入され、触媒床に接触される。改善された燃料は
、触媒床より取り出され、燃料改質装置のハウジングよ
り動力発生部に導入される。The main fuel is mixed with steam, introduced into the fuel reformer housing, and contacted with the catalyst bed. The improved fuel is removed from the catalyst bed and introduced into the power generation section through the fuel reformer housing.

燃料改質装置のハウジングにはバーナが設けられており
、このバーナによって燃料改質用触媒チューブび触媒床
を加熱して触媒の反応温度を維持するように構成されて
いる。大出力の大型燃料電池発電装置においては、各燃
料改質装置のハウジングには、多数の燃料改質用触媒チ
ューブが設けられており、各燃料改質用触媒チューブは
全て加熱され、触媒による燃料改質効率を高められるこ
とが必要となる。A burner is provided in the housing of the fuel reformer and is configured to heat the fuel reforming catalyst tubes and the catalyst bed to maintain the reaction temperature of the catalyst. In a large-scale fuel cell power generation device with high output, the housing of each fuel reformer is equipped with a large number of fuel reforming catalyst tubes, and each fuel reforming catalyst tube is heated, and the fuel is heated by the catalyst. It is necessary to be able to increase the reforming efficiency.

［発明の解決しようとする問題点］ これらの大出力の燃料電池発電装置における燃料改質装
置のハウジングには通常単一のバーナが設けられており
、この単一のバーナによって全ての燃料改質用触媒チュ
ーブを加熱している。このような従来の装置においては
、単一のバーナによって全ての燃料改質用触媒チューブ
を適当な温度に均一に加熱することが大きな問題となっ
ている。[Problems to be Solved by the Invention] The housing of the fuel reformer in these high-output fuel cell power generation devices is usually provided with a single burner, and this single burner performs all fuel reforming. heating the catalyst tube. In such conventional devices, a major problem is uniformly heating all the fuel reforming catalyst tubes to an appropriate temperature using a single burner.

この問題を解決するためにオー、エル、オレセン（０，
Ｌ、０１ｅｓｅｎ）に１９８７年４月２８日に付与され
たアメリカ特許第４．６６１，３３２号には、バーナの
発生する熱を各燃料改質用触媒チューブに均一に分配す
ることが提案されている。このアメリカ特許においては
、触媒床を内蔵する燃料改質用触媒チューブに取付ける
スリーブセラミックで形成するとともに、このセラミッ
ク製スリーブに複数の螺施状溝を設けて、スリーブ内を
分割して燃料改質用触媒チューブの外側にバーナの高温
ガスの通路を形成している。各螺施状溝は、螺施状の突
条で分割されており、各突条は円曲面によってチューブ
に結合されている。このアメリカ特許の構成によれば、
チューブ外表面の約２５乃至３５％が螺旋条の突条と接
触していることになるため、この突条との接触部には高
温ガスが接触しないようになっており、熱交換効率を著
しく悪化させている。このため、燃料改質用触媒チュー
ブを充分に加熱するためには、高温ガスの流速で低く設
定しなければならないものとなる。To solve this problem, O, L, Olesen (0,
U.S. Pat. No. 4,661,332, issued April 28, 1987 to L. There is. In this US patent, the sleeve is made of ceramic and attached to a fuel reforming catalyst tube containing a catalyst bed, and the ceramic sleeve is provided with a plurality of threaded grooves to divide the inside of the sleeve for fuel reforming. A passage for the burner's hot gas is formed on the outside of the catalyst tube. Each threaded groove is divided by a threaded ridge, and each ridge is connected to the tube by a circular curved surface. According to the structure of this American patent,
Approximately 25 to 35% of the outer surface of the tube is in contact with the protrusions of the spiral strip, so high temperature gas is prevented from coming into contact with the protrusions, significantly reducing heat exchange efficiency. It's making it worse. Therefore, in order to sufficiently heat the fuel reforming catalyst tube, the flow rate of the high temperature gas must be set low.

また、セラミック製のスリーブにおいては、セラミック
の低い弾性のために、金属製チューブへの取付けが困難
となる。また更に、金属チューブとセラミックスリーブ
では材質の相違Ｉこよる熱膨張係数によって、相互結合
の維持が困難なものとなっている。更に、実際の操業に
おいては、前記のアメリカ特許の燃料改質用触媒チュー
ブの上下端では、３００〜５００°Ｆの温度差が生じる
。Additionally, ceramic sleeves are difficult to attach to metal tubes due to the ceramic's low elasticity. Furthermore, maintaining mutual bonding between the metal tube and the ceramic sleeve is difficult due to the different coefficients of thermal expansion caused by the different materials. Furthermore, in actual operation, there is a temperature difference of 300 to 500 degrees Fahrenheit between the upper and lower ends of the fuel reforming catalyst tube of the aforementioned US patent.

そこで本発明は、燃料電池発電設備における燃料改質装
置の燃料改質用触媒チューブのバーナガスからの熱伝達
効率を向上することの出来る加熱装置を提供することを
目的としている。SUMMARY OF THE INVENTION An object of the present invention is to provide a heating device that can improve the efficiency of heat transfer from burner gas to a fuel reforming catalyst tube of a fuel reformer in a fuel cell power generation facility.

また、本発明は、触媒式の燃料改質装置を従来の装置に
比較して約３０％位小型化することを目的としている。Further, the present invention aims to reduce the size of a catalytic fuel reformer by about 30% compared to conventional devices.

更に、本発明では、安価で、組立て易く、気密性に優れ
、しかも可焼性を有する熱伝達部を備えた燃料改質用触
媒チューブの加熱装置を提供することを目的としている
。A further object of the present invention is to provide a heating device for a catalyst tube for fuel reforming that is inexpensive, easy to assemble, has excellent airtightness, and is equipped with a heat transfer portion that is flammable.

「課題を解決するための手段］ 本発明の第一の構成によれば、通孔内に触媒床を有する
筒状の金属チューブと、該金属チューブの外側にチュー
ブと同軸に配設され、通孔の内側表面を前記チューブの
外表面に対して離間して位置するスリーブと、前記チュ
ーブと前記スリーブ間の間隙内に配設されて螺施状の高
温ガス通路を形成するとともに、前記チューブとの接触
部が円弧状に形成されて前記チューブ表面と線接触する
ように形成され、実質的にチューブの全外表面が前記高
温ガスに接触するように構成された複数のリブとによっ
て構成されており、前記スリーブが金属薄板で形成され
、前記チューブの周囲に折曲げ組付けられ、スリーブと
リブ及びチューブ間に燃料処理装置の動作中におけるチ
ューブ及びスリーブの膨張、収縮により弛みが生じない
相互結合を形成するようにしたことを特徴とする燃料電
池動力装置における触媒式の燃料改質用触媒チューブの
加熱装置が提供される。"Means for Solving the Problems" According to the first configuration of the present invention, a cylindrical metal tube having a catalyst bed in a through hole, a cylindrical metal tube disposed coaxially with the tube on the outside of the metal tube, and a catalyst bed provided in the through hole. a sleeve having an inner surface of the hole spaced apart from the outer surface of the tube; and a sleeve disposed within a gap between the tube and the sleeve to form a threaded hot gas passage; A contact portion is formed in an arc shape so as to be in line contact with the tube surface, and substantially the entire outer surface of the tube is configured to be in contact with the high temperature gas. The sleeve is formed of a thin metal plate and is bent and assembled around the tube, and the sleeve is mutually connected to the ribs and the tube so that there is no loosening due to expansion and contraction of the tube and sleeve during operation of the fuel processing device. There is provided a heating device for a catalytic fuel reforming catalyst tube in a fuel cell power plant, characterized in that the heating device is configured to form a catalytic tube for reforming fuel in a fuel cell power plant.

なお、前記のリブは、複数の円柱状ロッドで形成されて
おり、前記円柱状ロッドは、螺施状高温ガス通路に沿っ
て折曲げられ、チューブ外表面に溶接により取付けるこ
とが出初る。また、前記ロッドは、離間した位置でスポ
ット溶接されており、スポット溶接部以外の部分におい
ては、前記高温ガスが前記チューブの外表面とロッド間
に流通するようにすることも可能である。更に、前記リ
ブは前記スリーブに形成した螺施状の溝で構成されてお
り、該溝は断面視半円形状に形成することら出来る。Note that the ribs are formed of a plurality of cylindrical rods, and the cylindrical rods are bent along the threaded hot gas passage and attached to the outer surface of the tube by welding. Further, the rods may be spot welded at separate positions, and the high temperature gas may flow between the outer surface of the tube and the rods in areas other than the spot welds. Further, the rib is formed of a threaded groove formed in the sleeve, and the groove can be formed in a semicircular shape in cross section.

なお、本は発明による加熱装置は、燃料電池動力設備以
外にも適用可能であり、この場合には、加熱流体と接触
する外表面を有する被加熱物と、該被加熱物の外表面に
対して離間して配設される内表面を有するスリーブと、
前記被加熱物と前記スリーブ間の間隙内に配設されて加
熱流体通路を形成するとともに、少なくとも前記被加熱
物と、の接触部が円弧状に形成されて前記被加熱物表面
と線接触するように形成され、実質的に被加熱物の全外
表面が前記加熱流体に接触するように構成された複数の
リブとによって構成されており、前記スリーブが金属薄
板で折り曲げ形成され、前記被加熱物の周囲に折曲げ組
付けられ、スリーブとリブ及び被加熱物間にの膨張、収
縮により弛みが生じない相互結合を形成するように構成
することが出来る。It should be noted that the heating device according to the present invention can be applied to equipment other than fuel cell power equipment, and in this case, it can be applied to an object to be heated that has an outer surface that comes into contact with a heating fluid, and to the outer surface of the object to be heated. a sleeve having inner surfaces spaced apart from each other;
Disposed in the gap between the object to be heated and the sleeve to form a heated fluid passage, and at least a contact portion with the object to be heated is formed in an arc shape to make line contact with the surface of the object to be heated. and a plurality of ribs configured such that substantially the entire outer surface of the object to be heated comes into contact with the heating fluid; the sleeve is formed by bending a thin metal plate; It can be folded and assembled around an object to form a mutual connection that does not loosen due to expansion and contraction between the sleeve, the ribs, and the object to be heated.

［実施例コ 以下に、本発明の好適実施例を添付図面を参照しながら
説明する。第１図乃至第４図は、本発明の第一実施例に
よる燃料電池発電装置の燃料改質装置又は燃料処理装置
の燃料改質用触媒チューブの構成を示している。燃料改
質用触媒チューブの全体は、蓼照符号２で示されており
、この燃料改質用触媒チューブ２の外側表面には、多数
の円柱状の鋼製ロッド４が取付けられている。各ロッド
４は、チューブの外表面の螺施状リブを形成しており、
これらのリブは、円形断面となっている。[Embodiments] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show the configuration of a fuel reforming catalyst tube of a fuel reformer or a fuel processing device of a fuel cell power generation device according to a first embodiment of the present invention. The whole of the fuel reforming catalyst tube is indicated by the reference numeral 2, and a number of cylindrical steel rods 4 are attached to the outer surface of the fuel reforming catalyst tube 2. Each rod 4 forms a threaded rib on the outer surface of the tube;
These ribs have a circular cross section.

螺施状リブ間に設けられた間隙６は、燃料処理装置が操
業している間、バーナによって発生される高温ガスの螺
施状通路を形成している。第２図には、第一実施例の燃
料改質用触媒チューブ２の断面が示されている。第２図
より明らかなように、ロッド４は、円形状断面に形成さ
れており、燃料改質用触媒チューブ２の外表面とは、線
接触するように構成されている。また、さらに、図示の
実施例においては、ロッド４を円形断面として、チュー
ブ４の外表面との接触面積を最小とすると同時に、各ロ
ッド４を所定間隔を存したスポット溶接によって、チュ
ーブ２の外表面に固定するようにして、溶接部間のロッ
ドとチューブの対向面間には、バーナの加熱ガスが流通
出来るように構成されている。The gaps 6 provided between the threaded ribs form a threaded passageway for the hot gases generated by the burner during operation of the fuel processor. FIG. 2 shows a cross section of the fuel reforming catalyst tube 2 of the first embodiment. As is clear from FIG. 2, the rod 4 is formed to have a circular cross section, and is configured to be in line contact with the outer surface of the fuel reforming catalyst tube 2. Further, in the illustrated embodiment, the rods 4 have a circular cross section to minimize the contact area with the outer surface of the tube 4, and each rod 4 is spot welded at a predetermined interval to form the outer surface of the tube 2. The tube is fixed to the surface so that heating gas from the burner can flow between the opposing surfaces of the rod and tube between the welded portions.

第１図に示すように螺施状のロッド４を外表面に固定取
り付けしたチューブ２には、第３図に示すスリーブ８が
、チューブ２の外表面のロッドイを包囲するように被着
されている。本実施例においては、スリーブ８は、薄板
状の金属板で形成されており、この金属板は、円筒状に
折り曲げられ、両端部を重合部ＩＯで重ね合わせた状態
とされている。この円筒状スリーブ８は、チューブ２に
組み付けられる前に、締結ストラップ１２によって、円
筒状の折り曲げ状態に仮止めすると、組み立てがし易く
好都合である。次いで、第４図に示すように、円筒状の
スリーブ８の上端又は下端より、ロッド４を組み付けた
チューブ２を挿入する。チューブ２を挿入した後、締結
ストラップ１２を締め付けて、スリーブ８の内側表面を
、ロッド４の外表面に緊密に接合させる。この状態で、
スリーブ８を形成する金属板の重合部を溶接して接合し
、しかる後に、締結ストラップ１２を取り除く。この組
み立て状態の燃料改質用触媒チューブの加熱装置の構成
も第４図に示されている。As shown in FIG. 1, a threaded rod 4 is fixedly attached to the outer surface of the tube 2, and a sleeve 8 shown in FIG. 3 is attached so as to surround the rod 4 on the outer surface of the tube 2. There is. In this embodiment, the sleeve 8 is formed of a thin metal plate, which is bent into a cylindrical shape and has both ends overlapped at an overlapping part IO. It is convenient for the cylindrical sleeve 8 to be easily assembled if it is temporarily fixed in a cylindrical bent state using the fastening strap 12 before being assembled to the tube 2. Next, as shown in FIG. 4, the tube 2 with the rod 4 assembled therein is inserted from the upper or lower end of the cylindrical sleeve 8. After inserting the tube 2, the fastening strap 12 is tightened to tightly join the inner surface of the sleeve 8 to the outer surface of the rod 4. In this state,
The overlapping parts of the metal plates forming the sleeve 8 are welded together and the fastening straps 12 are then removed. The configuration of the heating device for the fuel reforming catalyst tube in this assembled state is also shown in FIG.

第５図及び第６図は、本発明の他の実施例による燃料改
質用触媒チューブの加熱装置の構成を示している。この
例においては、スリーブ１４は、前記の実施例と同様に
薄板状の金属板で、形成されており、前記と同様に円筒
状に折り曲げられて、チューブを包囲するスリーブとさ
れている。本実施例においては、金属板製スリーブには
、内向きに突出する複数の螺施状溝１６が形成されてい
る。5 and 6 show the structure of a heating device for a fuel reforming catalyst tube according to another embodiment of the present invention. In this example, the sleeve 14 is made of a thin metal plate as in the previous embodiment, and is bent into a cylindrical shape to form a sleeve surrounding the tube. In this embodiment, a plurality of threaded grooves 16 projecting inward are formed in the metal plate sleeve.

この螺施状溝１６は、前記の実施例におけるロッド４に
代わるもので、チューブ２の周囲に相互に分離された複
数の加熱ガス通路１８を形成する。This threaded groove 16 replaces the rod 4 in the previous embodiment and forms a plurality of mutually separated heating gas passages 18 around the tube 2.

螺施状溝１６は、第６図に示すように断面視Ｕ字状に形
成されており、前記の実施例と同様に、チューブ２の外
表面との間に最小接触面積で線接触するように構成され
ている。従って、各隣接する螺施状溝１６間に形成され
る加熱ガス通路１８における、チューブ２の加熱ガスに
対する接触面積は最大となる。The threaded groove 16 is formed into a U-shape in cross section as shown in FIG. It is composed of Therefore, the contact area of the tube 2 with the heating gas in the heating gas passage 18 formed between the adjacent threaded grooves 16 is maximized.

第７図は、第５図及び第６図に示す実施例によって形成
された燃料改質用触媒チューブの加熱装置と、前記した
アメリカ特許第４．８６１，３２３号における燃料改質
用触媒チューブの加熱装置の性能を比較して示すグラフ
である。第７図において、ｙ袖には燃料改質効率を示し
、Ｘ軸には加熱ガス通路に流通する改善される燃料の量
及び加熱ガス流量が示されている。なお、通常の燃料電
池発電設備において要求される燃料改質効率は、７５％
以上であり、これ以下の燃料改質効率は不適とされる。FIG. 7 shows a heating device for a fuel reforming catalyst tube formed according to the embodiment shown in FIGS. It is a graph showing a comparison of the performance of heating devices. In FIG. 7, the y axis shows the fuel reforming efficiency, and the x axis shows the improved amount of fuel flowing through the heating gas passage and the heating gas flow rate. The fuel reforming efficiency required for normal fuel cell power generation equipment is 75%.
This is the above value, and a fuel reforming efficiency lower than this value is considered inappropriate.

第７図のグラフにおいては、本発明の加熱装置を用いて
得られた燃料改質効率の、燃料流量及びガス流量に対す
る変化を破線で示し、前記アメリカ特許に開示された加
熱装置を用いた場合の燃料改質効率の変化を実線で示し
ている。第７図より明らかなように、本発明による加熱
装置を用いた場合には、従来提案されている加熱装置を
用いた場合に比べて、格段の燃料改質効率が達成される
。In the graph of FIG. 7, the broken line shows the change in fuel reforming efficiency with respect to the fuel flow rate and gas flow rate obtained using the heating device of the present invention, and when the heating device disclosed in the above-mentioned US patent is used. The solid line shows the change in fuel reforming efficiency. As is clear from FIG. 7, when the heating device according to the present invention is used, a significantly higher fuel reforming efficiency is achieved than when using conventionally proposed heating devices.

［効　　果］ 上記のように、本発明によれば、燃料改質用触媒チュー
ブとスリーブ間の、空隙部を複数の加熱ガス通路に分割
して、各加熱ガス通路に流通する加熱ガス流量が、均一
となり、従って燃料改質用触媒チューに対する加熱効率
が、燃料改質用触媒チューブの各部に於いて均一となる
ように構成すると同時に、加熱ガス通路を分割形成する
ために設ける仕切り壁部の燃料改質用触媒チューブに対
する接触面積を必要最小限とすることによって、加熱ガ
スに接触する燃料改質用触媒チューブの外表面積を最大
として、加熱ガスによる加熱効率を飛躍的に向上させる
ことが出来る。また、上記した、本発明の構成によれば
、金属板を折り曲げてスリーブを形成するようにし、こ
れを締結ストラップを用いて又は他の手段により燃料改
質用触媒チューブの外表面に緊密に被着するように構成
したので、組み立てが非常に容易となる。[Effects] As described above, according to the present invention, the gap between the fuel reforming catalyst tube and the sleeve is divided into a plurality of heated gas passages, and the flow rate of the heated gas flowing through each heated gas passage is increased. , and therefore the heating efficiency for the fuel reforming catalyst tube is uniform in each part of the fuel reforming catalyst tube. By minimizing the contact area with the fuel reforming catalyst tube, the outer surface area of the fuel reforming catalyst tube that comes into contact with the heated gas can be maximized, and the heating efficiency by the heated gas can be dramatically improved. . Further, according to the above-mentioned configuration of the present invention, the metal plate is bent to form a sleeve, which is tightly covered with the outer surface of the fuel reforming catalyst tube using a fastening strap or other means. Since it is configured so that it can be attached, assembly is very easy.

なお、本発明は、上記の実施例に限定されるものではな
く、特許請求の範囲に記載された構成を満足する総ての
構成を包含するものであり、また、上記の実施例におい
ては、本発明の用途を燃料電池発電設備における、燃料
処理又は燃料改質に用いる燃料改質用触媒チューブの加
熱装置として説明したが、本発明の加熱装置は、同様に
加熱流体を被加熱物の周囲に形成した加熱流体通路に流
通させ、加熱流体を被加熱物に接触させて、熱伝達を行
ういかなる加熱装置に対しても適用可能である。Note that the present invention is not limited to the above-described embodiments, but includes all configurations that satisfy the configurations described in the claims, and in the above-described embodiments, Although the application of the present invention has been described as a heating device for a fuel reforming catalyst tube used for fuel processing or fuel reforming in a fuel cell power generation facility, the heating device of the present invention can similarly direct heating fluid around an object to be heated. The present invention can be applied to any heating device that transfers heat by causing the heating fluid to flow through a heating fluid passage formed in the wafer and contacting the object to be heated.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本発明の第一実施例による燃料改質用触媒チ
ューブをスリーブ組み付は前の状態で示す斜視図、 第２図は、本発明の第一実施例による第１図の燃料改質
用触媒チューブの要部の拡大断面図、第３図は、本発明
の第一実施例による第１図の燃料改質用触媒チューブに
被着するスリーブの燃料改質用触媒チューブへの組み付
は前の状態を示す斜視図、 ？Ｊ４図は、本発明の第一実施例による燃料改質用触媒
チューブの組み立て状態を示す斜視図、第５図は、本発
明の第二実施例による燃料改質用触媒チューブの斜視図
、 第６図は、本発明の第２実施例による第５図の燃料改質
用触媒チューブの要部の拡大断面図、及第７図は、本発
明と従来提案されている加熱装置を用いた場合の燃料改
質効率を比較してしめずグラフである。 ２　　・・・ ４　　・・・ ８　　・・・ Ｉ　４　　・・・ Ｉ　６　　・・・ 燃料改質用触媒チューブ ロッド スリーブ スリーブ 螺施状溝 ＪＦｌｒＧ−ｉ １Ｇ−３ ＪＦｉ”Ｇ　−４！ ２０　　　　　　　　　！１．０　　　　　　　　４０
５１）ｌ：ＣＩＦＩＣ日ＬＩＥＬ　ＦＬＯＷ　−ＬＢＳ
　ＦＬＩＥＬ／１−ＩＲ−Ｆ　Ｔ２ＦｉＧ−７1 is a perspective view showing a fuel reforming catalyst tube according to a first embodiment of the present invention in a state before the sleeve is assembled; FIG. 2 is a perspective view showing the fuel reforming catalyst tube of FIG. 1 according to a first embodiment of the present invention. FIG. 3 is an enlarged cross-sectional view of the essential parts of the reforming catalyst tube, showing how the sleeve attached to the fuel reforming catalyst tube of FIG. 1 according to the first embodiment of the present invention is attached to the fuel reforming catalyst tube. A perspective view showing the previous state of assembly. Figure J4 is a perspective view showing the assembled state of the fuel reforming catalyst tube according to the first embodiment of the present invention, and Figure 5 is a perspective view of the fuel reforming catalyst tube according to the second embodiment of the present invention. FIG. 6 is an enlarged sectional view of the main part of the fuel reforming catalyst tube shown in FIG. 5 according to the second embodiment of the present invention, and FIG. 7 is a diagram showing the case where the present invention and a conventionally proposed heating device are used. This is a graph comparing the fuel reforming efficiency. 2 ... 4 ... 8 ... I 4 ... I 6 ... Fuel reforming catalyst tube rod sleeve sleeve threaded groove JFlrG-i 1G-3 JFi"G -4! 20 !1 .0 40
51) l:CIFIC 日LIEL FLOW-LBS
FLIEL/1-IR-F T2FiG-7

Claims (5)

【特許請求の範囲】[Claims] （１）通孔内に触媒床を有する筒状の金属チューブと、
該金属チューブの外側にチューブと同軸に配設され、通
孔の内側表面を前記チューブの外表面に対して離間して
位置するスリーブと、前記チューブと前記スリーブ間の
間隙内に配設されて螺施状の高温ガス通路を形成すると
ともに、前記チューブとの接触部が円弧状に形成されて
前記チューブ表面と線接触するように形成され、実質的
にチューブの全外表面が前記高温ガスに接触するように
構成された複数のリブとによって構成されており、前記
スリーブが金属薄板で形成され、前記チューブの周囲に
折曲げ組付けられ、スリーブとリブ及びチューブ間に燃
料処理装置の動作中におけるチューブ及びスリーブの膨
張、収縮により弛みが生じない相互結合を形成するよう
にしたことを特徴とする燃料電池動力装置における触媒
式の燃料改質用触媒チューブの加熱装置。(1) A cylindrical metal tube having a catalyst bed in its through hole;
a sleeve disposed coaxially with the tube on the outside of the metal tube, the inner surface of the through hole being spaced apart from the outer surface of the tube; and a sleeve disposed within the gap between the tube and the sleeve. A spiral high-temperature gas passage is formed, and a contact portion with the tube is formed in an arc shape so as to be in line contact with the tube surface, so that substantially the entire outer surface of the tube is exposed to the high-temperature gas. and a plurality of ribs configured to make contact with each other, the sleeve is formed of a thin metal plate, and is bent and assembled around the tube, and there is no contact between the sleeve, the ribs, and the tube during operation of the fuel processing device. 1. A heating device for a catalyst tube for catalytic fuel reforming in a fuel cell power plant, characterized in that the tube and sleeve form a mutual connection that does not become loose due to expansion and contraction of the tube and sleeve. （２）前記のリブは、複数の円柱状ロッドで形成されて
おり、前記円柱状ロッドは、螺施状高温ガス通路に沿っ
て折曲げられ、チューブ外表面に溶接により取付けられ
ていることを特徴とする請求項第１項に記載の燃料改質
用触媒チューブの加熱装置。(2) The ribs are formed of a plurality of cylindrical rods, and the cylindrical rods are bent along the threaded hot gas passage and attached to the outer surface of the tube by welding. A heating device for a fuel reforming catalyst tube according to claim 1. （３）前記ロッドは、離間した位置でスポット溶接され
ており、スポット溶接部以外の部分においては、前記高
温ガスが前記チューブの外表面とロッド間に流通するよ
うにしたことを特徴とする請求項第２項に記載の燃料改
質用触媒チューブの加熱装置。(3) The rods are spot welded at separate positions, and the high temperature gas flows between the outer surface of the tube and the rods in areas other than the spot welds. The heating device for a fuel reforming catalyst tube according to item 2. （４）前記リブは前記スリーブに形成した螺施状の溝で
構成されており、該溝は断面視半円形状に形成されてい
ることを特徴とする請求項第１項に記載の燃料改質用触
媒チューブの加熱装置。(4) The fuel reformer according to claim 1, wherein the rib is constituted by a threaded groove formed in the sleeve, and the groove is formed in a semicircular shape in cross section. Heating device for catalyst tubes for quality use. （５）加熱流体と接触する外表面を有する被加熱物と、
該被加熱物の外表面に対して離間して配設される内表面
を有するスリーブと、前記被加熱物と前記スリーブ間の
間隙内に配設されて加熱流体通路を形成するとともに、
少なくとも前記被加熱物との接触部が円弧状に形成され
て前記被加熱物表面と線接触するように形成され、実質
的に被加熱物の全外表面が前記加熱流体に接触するよう
に構成された複数のリブとによって構成されており、前
記スリーブが金属薄板で折り曲げ形成され、前記被加熱
物の周囲に折曲げ組付けられ、スリーブとリブ及び被加
熱物間にの膨張、収縮により弛みが生じない相互結合を
形成するようにしたことを特徴とする加熱流体を用いた
加熱装置。(5) a heated object having an outer surface that comes into contact with a heating fluid;
a sleeve having an inner surface spaced apart from an outer surface of the object to be heated; and a sleeve disposed within a gap between the object to be heated and the sleeve to form a heated fluid passage;
At least a contact portion with the object to be heated is formed in an arc shape so as to be in line contact with the surface of the object to be heated, and substantially the entire outer surface of the object to be heated is configured to be in contact with the heating fluid. The sleeve is formed by bending a thin metal plate and is folded and assembled around the object to be heated. 1. A heating device using a heating fluid, characterized in that a mutual bond is formed that does not occur.
JP1070276A 1988-03-21 1989-03-22 Heating device for catalyst tube for fuel reforming Expired - Lifetime JP2712084B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/170,475 US4847051A (en) 1988-03-21 1988-03-21 Reformer tube heat transfer device
US170,475 1993-12-20

Publications (2)

Publication Number Publication Date
JPH029439A true JPH029439A (en) 1990-01-12
JP2712084B2 JP2712084B2 (en) 1998-02-10

Family

ID=22620001

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Application Number Title Priority Date Filing Date
JP1070276A Expired - Lifetime JP2712084B2 (en) 1988-03-21 1989-03-22 Heating device for catalyst tube for fuel reforming

Country Status (7)

Country Link
US (1) US4847051A (en)
EP (1) EP0334792B1 (en)
JP (1) JP2712084B2 (en)
CA (1) CA1316979C (en)
DE (1) DE68915197T2 (en)
DK (1) DK172516B1 (en)
ES (1) ES2052054T3 (en)

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CA1316979C (en) 1993-04-27
DK136989A (en) 1989-09-22
EP0334792B1 (en) 1994-05-11
DE68915197T2 (en) 1994-12-01
DE68915197D1 (en) 1994-06-16
EP0334792A2 (en) 1989-09-27
DK172516B1 (en) 1998-11-09
JP2712084B2 (en) 1998-02-10
DK136989D0 (en) 1989-03-21
US4847051A (en) 1989-07-11
EP0334792A3 (en) 1991-09-25
ES2052054T3 (en) 1994-07-01

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